Pete S-RCU

So what oil are you using and at what ratio?
Seems like it's important to this engine.
Mine shipped today, so should be here in a few days.

Rudolph Hart

Pete i'm using klotz 200 @ 25:1 hope you are looking forward to the run in period,it takes a while but since they sound so good it was'nt a drama.

CRG

My Feedback: (3)

Please note that Saito recommends a 20:1 ratio.

SrTelemaster150

And many are resorting to 15:1 to avoid siezures on the radials.

An-2o

I'm using 20:1 stihl ultra hp and it seems to really like it. When my engine arrive I took the rocker arm covers off check the valve and lube the mess out of it since it was dry from the factory, the guys at the airfield pick on us people who oil our engines up before use every week but our engines don't seize up or have rusty bearing so there you go.

Pete S-RCU

I'm just starting to break mine in.
Using Johnsrud chain saw oil 20:1.
The left cyl is running very cool, while the right one seems to be doing all the work.
I measured the temp on the exh 90degree fitting.
about 100 F on the left and 150F on the right.
Have tried leaning and richening the hsn, same ratio either way.
If I richen it way up for break in it's worse.
Have not looked at the plugs yet, but know what I'll see.
Is this normal?

kwik

Pete, it seems to me you can fix that, within limits, with the L needle.

But I think you will have to accept a "certain difference".

Pete S-RCU

Right, but this such a big difference I was concerned if I should continue running it that way, or get some advice on it?
It was better when I first started it with the factory settings, but the manual says richen it up for break-in.
Worried that the left cyl being so cool, it would break-in different than the right one.
Temp can be important in seating rings etc...

Rudolph Hart

Pete i hav'nt touched the needles on mine it pulls the right revs on the benchmark prop with good transition.You should be getting more oil out og the lefthand cylinder as it seems to run richer initially.After a while this went away on mine.If you can find 'montana mike' he fly's a big aerowoks cub and has posted vids on you tube.It will settle your nerves as it did mine if you watch them.

cheers
pete

ps hi kwik

SitNFly

My Feedback: (54)

Any advice as to needle access once mounted on the aircraft? Seems like the needles are going to be hidden behind the firewall on most installations. I imagine you'd drill an access hole in your motor box and rig up some guide tubes out of brass tubing.

kwik

Yes, guide-tubes.

If you have a Focke Wulf, you could reach the trumpet via the gun-hood.

Here is my Vailly Aviation Focke Wulf with the FG-84 ;

Hi Old Fart !!

https://www.youtube.com/watch?v=Cph9HMFfQqE&list=UUgI3jd4Z3cfjQKyisx5bArw

margus014

Hy. Has anyone used Saito fg57 engine until it is completely worn out? Does anyone know what is its engine lifespan in hours?

kwik

I wonder if anyone knows what the type-name of the FG-57 Walbro carburator is?

One of mine wont start now after a year not being used. So for example the Walbro of the Zenoah G-62, and the Vallach 120 cc is Walbro HDA-48D.

I need the type name in order to try to find a repair kit for it.

Typical the repair kit for the HDA-48D is called K-22, and you can then replace the membranes, and get it to start again.

My Corsair wont start, and the flying season is here.....Help!!!

w8ye

My Feedback: (16)

It has the Walbro label and it has a Walbro number. But . . . .

It is a proprietary Saito Carburetor. I don't know about the Saito factory, but Horizon wants you to buy a new carburetor for $157.50 and it is on Horizon's perpetual BACK ORDER No gaskets or any individual carb parts available from Horizon.



Try Walbro WYK parts? http://www.davesmotors.com/walbro-K1...33-58-194.html



This link is for reference
http://www.davesmotors.com/walbro-wy...arburetor.html

w8ye

My Feedback: (16)

I have a FG-36 and seems like I remember it being some sort of Walbro WYB-??

Look carefully around on the carburetor? There should be a sequence of ID

Look at the rubber parts of a K10-WYB repair kit?

At any rate there was never any consideration by Horizon that there would ever be a need for a new regulator diaphragm in a Walbro carburetor?

w8ye

My Feedback: (16)

With later diaphragm carbs, the pump diaphragm is made of Mylar and rarely goes bad.

But the metering valve regulator diaphragm is made of black rubber and is the usual culprit when it get to where you cannot adjust your carburetor.

What I'm saying is that likely all you need is to match up the proper shape of the black rubber metering valve diaphragm and install this part in your carb?

There are also WYC and WYL Walbro barrel carbs

SrTelemaster150

Here is a carburetor that is being used to convert FA-180s to gas. It should have a Venturi of the proper size for he FG-57 as the FG-57 utilizes FA-180 pistons so the bore/venturi ratio should be correct.

http://www.ebay.com/itm/new-Zama-car...item2ee0eb6e4f

Replacement parts are readily available.

http://www.ebay.com/itm/RB-75-Genuin...item27e8ea23dd

I have several of the C1Q-P8s that I was going to use for E-85 conversions but I abandoned that idea due to the scarcity of E-85 north of the corn belt. I would send you one for the cost of shipping.

I can measure the Venturi if you like.

w8ye

My Feedback: (16)

The previous post left out some explanation.

The situation is that the Saito twin is a alternate firing twin and not simultaneous firing like a two stroke opposed twin.

Therefore, the proper size carb is one for just one of the two cylinders. Thus the carburetor the proper size for a 180 gas Saito should be correct for a FG-57.

kwik

So, w8ye, did you see some kind of number on the carb? Like some WYK stuff?

I sendt a mail to RC-Japan, and they will forward it to Saito, but......

w8ye

My Feedback: (16)

My FG-36 is mounted and I can not see the number

w8ye

My Feedback: (16)

The Stihl 4-mix weed whacker engines comes in 28, 32, and 36cc variants and they all have the same carburetor

The part number is Stihl 4180-120-0604 C1Q-S110D Trimmer Edger Carburetor FS90 FS100 and the are available from your nearest Stihl dealer and are all over Ebay.

I would look for a new one for less than $38

Rudolph Hart

Well pull it out you lazy so and so

SrTelemaster150

C1Q is a Zama part number prefix. If anyone would post Venturi bore size at the mount flange & the bolt pattern spread, I might get off my arse & check one of the C1Q-8s that I have.

kwik

Yes, I dont buy such things from Horizon.

I guess I will have topull my engine out from the cowling and look for the type number on the carb then.

Open complaint to SAITO;

You must state the type of carburator in the Manual !!!

w8ye

My Feedback: (16)

The C1Q-S110D for the Stihl 4 mix weed whacker has a 10mm venturi and uses a RB0160 rebuild kit and just the diaphragms is a GND-91 kit